GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2008 🢒 Sierra - 2WD 🢒 Brakes 🢒 Antilock Brake System 🢒 DTC C0252

Diagnostic Instructions
    • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
    • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
    •  Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC C0252 00: VSES Sensor Uncorrelated

Circuit/System Description

The vehicle stability enhancement system (VSES) is activated by the electronic brake control module (EBCM) and monitors the yaw rate/lateral accelerometer sensor, and steering wheel angle sensor inputs to ensure they correlate within their desired ranges.

Conditions for Running the DTC
    • The steer angle has been centered.
    • The VSES is active.
    • The centered lateral acceleration value is less than 0.5 g.
    • The yaw rate error is less than 6 degrees/second.

Conditions for Setting the DTC

One of the following conditions exists:

    • The DTC sets when VSES is engaged for 10 seconds with the yaw rate error always in either understeer or oversteer.
    • The yaw rate error is greater then 10 degrees/second for 5 seconds, and the yaw has not changed and the lateral acceleration is less than 0.5 g.

Action Taken When the DTC Sets

One or more of the following actions may occur:

    • The EBCM disables the ABS/TCS/VSES for the duration of the ignition cycle.
    • The ABS and VSES indicators illuminate.
    • The driver information center (DIC) displays the Service Traction Control and Stabilitrak message.

Conditions for Clearing the DTC
    • The condition for the DTC is no longer present.
    • The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.

Diagnostic Aids

The following conditions can cause this concern:

    • Improper steering alignment
    • An internal lateral accelerometer failure

Reference Information

Schematic Reference

Antilock Brake System Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

ABS Description and Operation

Electrical Information Reference

    •  Circuit Testing
    •  Connector Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

Scan Tool Reference

Control Module References for Scan Tool Information

Circuit/System Verification
  1. Perform the steering angle sensor calibration.
  2. Clear the DTC with a scan tool, and operate the vehicle within the conditions for setting the DTC.
  3. Verify DTCs : C0186, C0196, C0252, C0253, or C0710 are not set.
    4. ⇒If DTCs C0186, C0196, C0253, or C0710 are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle
    ⇒If only DTC C0252 set as current, replace the EBCM.